Pith Number

pith:A4AB3TD5

pith:2012:A4AB3TD5TJG5KAB57HXCUMERIL

not attested not anchored not stored refs pending

Recovery of the Historical SN1957D in X-rays with Chandra

Bradley C. Whitmore, Christopher J. Stockdale, K. D. Kuntz, Knox S. Long, L. E. H. Godfrey, Paul P. Plucinsky, P. Frank Winkler, Roberto Soria, William P. Blair

arxiv:1207.1555 v1 · 2012-07-06 · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A4AB3TD5TJG5KAB57HXCUMERIL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T01:56:33.908642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07001dcc7d9a4dd5003df9ee2a309142ec120bb07f45f671edfe665bc848c5ba

Aliases

arxiv: 1207.1555 · arxiv_version: 1207.1555v1 · doi: 10.48550/arxiv.1207.1555 · pith_short_12: A4AB3TD5TJG5 · pith_short_16: A4AB3TD5TJG5KAB5 · pith_short_8: A4AB3TD5

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/A4AB3TD5TJG5KAB57HXCUMERIL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 07001dcc7d9a4dd5003df9ee2a309142ec120bb07f45f671edfe665bc848c5ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f257f79147012723157441df9affd7b759cd949e2c6747b93b2961b030f91420",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-07-06T08:27:09Z",
    "title_canon_sha256": "3d99d6efbff22d819c6f47ab612e78f9eabd0884948d1751d33113ad8867b11c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.1555",
    "kind": "arxiv",
    "version": 1
  }
}